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How do you check a water pump?

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Anonymous

15y ago
Updated: 8/16/2019

There is a drain or dribble hole in the case at the bottom under the shaft. Is there wet or staining? Yes means bad seal, replace pump.

Grab the pump pulley and rock it up and down or side to side, any movement that you can feel means the bearings have failed. Replace pump.

Spin the pump, and growl or scrape means the bearings are bad. Replace pump.

A slight whine is normal on the spin test from the seal.

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Wiki User

15y ago

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